Looks like you're off to a good start.... get an external amp on those Perfects & you should really like the sound.

Axilrod, no need to be so tough on the guy.... that is a point tho, I'd take 5 minutes to clean up your wiring a little bit, get it all routed nicely & get the speaker/power/remote wires more separate from eachother....

1. Buy a new subwoofer amp (saving for an Alpine V12 ClassD 500).
2. Switch the new sub amp to power the subs (gain turned all the way down as to not blow those p.o.s. subs out of the p.o.s. box )
3. Wire 4channel JBL currently powering subs to power the speakers.
4. Sell shitty amp/sub to someone who could use it -- buy new 4 channel amp (might get a PowerPrecisionPro) for inner speakers -- buy Alpine TypeR 12s.